The Ashcroft DXLdp Series differential pressure transmitters are variable capacitance sensors within a glass-clad silicon
chip. The patented Si-Glas™ technology combines the inherent high sensitivity of a variable capacitance transducer with
the repeatability of a micromachined, ultra-thin silicon diaphragm.

The Ashcroft Si-Glas sensor enables precise measurement and control of very low pressure. Although the ultra-thin silicon
diaphragm deflects only a micron, the sensor is 100 times more sensitive to pressure than available silicon piezoresistive
pressure sensors. The Si-Glas sensor is composed of only sputtered metals and glass that is molecularly bonded to silicon. There
are no epoxies or other organics in the sensor to contribute to drift or mechanical degradation over time. The glass-clad
silicon diaphragm withstands extreme overpressure as well as severe shock and vibration.